First results of submillimeter polarimetry

Details First results of submillimeter polarimetry First results of submillimeter polarimetry

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984abas.symp..134h&link_type=abstract

In NASA. Ames Research Center Airborne Astron. Symp. p 134-139 (SEE N85-17848 08-89)

Astronomy and Astrophysics

Astronomy

Far Infrared Radiation, Interstellar Gas, Molecular Clouds, Orion Nebula, Polarimetry, Submillimeter Waves, Alignment, Magnetic Fields, Mars (Planet), Silicates

Scientific paper

Airborne results of submillimeter polarization at one wavelength, 270 micro m for just three points in the sky are presented. Polarizations of 1.7% at each of two points in Orion are shown. A null result at 400 micro m from ground-based observations of Mars at opposition is also presented. A null result for W3(OH) is given. The Kleinmann-Low Nebula (KL) was chosen for one of the measurements because it is bright and polarization had been observed 10 micro m. Airborne results of submillimeter polarimetry indicate that: (1) Cool, dense interstellar clouds can emit polarized submillimeter radiation; (2) The direction of the magnetic field, averaged over the 90 beams, is the same for the Kleinmann-Low Nebula and the 400 micro m peak 1.5 south of the Nebula; and (3) The effectiveness of the grain alignment mechanism, averaged over the 90 beams, is the same for the Kleinmann-Low Nebula and the 400 micro m peak.

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